Algebra

1. Simplify the expression: 4√18+5√32
A.45√2
B.32√2
C.116√2
D.9√50

2. Simplify the expression: 7√5-3√80
A.-5√5
B.-4√75
C.-5
D.4√-75

3. Simplify the expression: √21(√3+√14)
A.9√7-49√6
B.2√6+√35
C.3√7+7√6
D.√357

4.Simplified by rationalizing the denominator: 4/√10-√6
A.√10+√6
B.4
C.4√10+4√6
D.4√10-4√6/16-2√15

The think the answers is
1.D
2.C
3.D
4.C
But I'm not sure. Please correct me if I'm wrong and explain.

asked by GummyBears16
  1. I'm stuck on these can someone explain how to do them?

    posted by Blank
  2. 1.b 2.a 3.c 4.a

    posted by .......
  3. Can you explain please.

    posted by GummyBears16
  4. 1. B
    2. A
    3. C
    4. A

    100% CORRECT!

    posted by Jinxx
  5. 100% ^^^^^ I'm passing with an A+ now openstudy sucks)

    posted by CASH SON

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